1/*-
  2 * Copyright (c) Sun Microsystems, Inc. 1998 All rights reserved.
  3 *
  4 * Redistribution and use in source and binary forms, with or without
  5 * modification, are permitted provided that the following conditions
  6 * are met:
  7 *
  8 * 1. Redistributions of source code must retain the above copyright
  9 *    notice, this list of conditions and the following disclaimer.
 10 *
 11 * 2. Redistributions in binary form must reproduce the above copyright
 12 *    notice, this list of conditions and the following disclaimer in the
 13 *    documentation and/or other materials provided with the distribution.
 14 *
 15 * 3. All advertising materials mentioning features or use of this software
 16 *    must display the following acknowledgement:
 17 *      This product includes software developed by the SMCC Technology
 18 *      Development Group at Sun Microsystems, Inc.
 19 *
 20 * 4. The name of the Sun Microsystems, Inc nor may not be used to endorse or
 21 *      promote products derived from this software without specific prior
 22 *      written permission.
 23 *
 24 * SUN MICROSYSTEMS DOES NOT CLAIM MERCHANTABILITY OF THIS SOFTWARE OR THE
 25 * SUITABILITY OF THIS SOFTWARE FOR ANY PARTICULAR PURPOSE.  The software is
 26 * provided "as is" without express or implied warranty of any kind.
 27 *
 28 * These notices must be retained in any copies of any part of this software.
 29 *
 30 * $KAME: altq_rmclass_debug.h,v 1.3 2002/11/29 04:36:24 kjc Exp $
 31 */
 32
 33#ifndef _ALTQ_ALTQ_RMCLASS_DEBUG_H_
 34#define	_ALTQ_ALTQ_RMCLASS_DEBUG_H_
 35
 36/* #pragma ident	"@(#)rm_class_debug.h	1.7	98/05/04 SMI" */
 37
 38/*
 39 * Cbq debugging macros
 40 */
 41
 42#ifdef __cplusplus
 43extern "C" {
 44#endif
 45
 46#ifdef	CBQ_TRACE
 47#ifndef NCBQTRACE
 48#define	NCBQTRACE (16 * 1024)
 49#endif
 50
 51/*
 52 * To view the trace output, using adb, type:
 53 *	adb -k /dev/ksyms /dev/mem <cr>, then type
 54 *	cbqtrace_count/D to get the count, then type
 55 *	cbqtrace_buffer,0tcount/Dp4C" "Xn
 56 *	This will dump the trace buffer from 0 to count.
 57 */
 58/*
 59 * in ALTQ, "call cbqtrace_dump(N)" from DDB to display 20 events
 60 * from Nth event in the circular buffer.
 61 */
 62
 63struct cbqtrace {
 64	int count;
 65	int function;		/* address of function */
 66	int trace_action;	/* descriptive 4 characters */
 67	int object;		/* object operated on */
 68};
 69
 70extern struct cbqtrace cbqtrace_buffer[];
 71extern struct cbqtrace *cbqtrace_ptr;
 72extern int cbqtrace_count;
 73
 74#define	CBQTRACEINIT() {				\
 75	if (cbqtrace_ptr == NULL)		\
 76		cbqtrace_ptr = cbqtrace_buffer; \
 77	else { \
 78		cbqtrace_ptr = cbqtrace_buffer; \
 79		bzero((void *)cbqtrace_ptr, sizeof(cbqtrace_buffer)); \
 80		cbqtrace_count = 0; \
 81	} \
 82}
 83
 84#define	LOCK_TRACE()	splimp()
 85#define	UNLOCK_TRACE(x)	splx(x)
 86
 87#define	CBQTRACE(func, act, obj) {		\
 88	int __s = LOCK_TRACE();			\
 89	int *_p = &cbqtrace_ptr->count;	\
 90	*_p++ = ++cbqtrace_count;		\
 91	*_p++ = (int)(func);			\
 92	*_p++ = (int)(act);			\
 93	*_p++ = (int)(obj);			\
 94	if ((struct cbqtrace *)(void *)_p >= &cbqtrace_buffer[NCBQTRACE])\
 95		cbqtrace_ptr = cbqtrace_buffer; \
 96	else					\
 97		cbqtrace_ptr = (struct cbqtrace *)(void *)_p; \
 98	UNLOCK_TRACE(__s);			\
 99	}
100#else
101
102/* If no tracing, define no-ops */
103#define	CBQTRACEINIT()
104#define	CBQTRACE(a, b, c)
105
106#endif	/* !CBQ_TRACE */
107
108#ifdef __cplusplus
109}
110#endif
111
112#endif	/* _ALTQ_ALTQ_RMCLASS_DEBUG_H_ */